Countess Effie of Deasmhumhain

Countess Effie of Deasmhumhain (1 October 1051-), also known as Countess Effie of Desmond, was the Countess of Desmond with Earl Muiredach of Deasmhumhain. Effie was from Scotland, but she wed Earl Muiredach in southern Ireland, moving there to become his wife.